ABSTRACT
Introduction: The sulci of the human brain are specifically the result of an evolutionary infolding process. Theseare the anatomical structures which border and divide the adjacent gyri. Knowledge of pattern of sulci and theirsulcul and intersulcal length is important for diagnosis of neurological, functional and cognitive disorders.Aim: The aim of the study is to present the significance of morphological and morphometric measurements ofsulci of superolateral surface of frontal lobe and their comparison between right and left cerebral hemispheres.Materials and methods: The study comprised of 50 formalin fixed cerebral hemispheres 25 right and 25 left, ofhuman cadaver of unknown sex which were obtained from the Department of Anatomy, Government MedicalCollege, Amritsar. . All the parameters were taken by using standard digital vernier calliper and calibrated scale.Result and conclusion: All the sulci of superolateral surface of frontal lobe were found to be present in all thespecimens of right and left cerebral hemispheres except AHR which was absent in 4%(2) specimens of the rightside. The mean length of CS and PreCS was found to be more in right hemispheres where as mean depth of bothsulci was more in left hemispheres. Mean length and depth of lateral sulcus was more in left side as comparedto right. Mean length of SFS and IFS was greater in right hemispheres whereas the mean depth of both the sulciwas found to be similar in both sides. Hence the differences in sulcul length and depth indicate that the twocerebral hemispheres differ structurally and it can be speculated that some morphological asymmetries couldbe related to other functional hemispheric specialization
ABSTRACT
Dados acerca do lado da cama onde as mulheres dormem foram coletados para subsidiar a validade de um projeto amplo para determinar se esta atividade é lateralizada. Informações a respeito do lado que ocupam na cama de casal, sua lateralidade manual, o tempo de convívio do casal e outros itens adicionais foram coletados em amostra de 229 mulheres com idades de 20 a 65 anos. As frequências totais de ocupação nos lados da cama se mostraram estatisticamente equivalentes, porém o lado esquerdo mostrou ser significantemente (Χ² = 5,44, 1 g.l., p<0,05) mais escolhido (70 por cento) nos casos em que a escolha foi feita espontaneamente (i.e, não determinada por fatores impositivos). Conclui-se que os dados indicam a validade da pesquisa proposta que se insere na linha de estudos dedicados à compreensão dos mecanismos de funcionamento do sistema nervoso central.
Data relative on the side occupied by females in double beds were collected in order to evaluate the feasebility to carry-out a more extensive study to determine if this behavioral pattern is lateralized. Information relative to the side occupied in the bed, manual lateralization, how long lived togheter, and other related questions were collected in a sample of 229 women aged from 20 to 65 years old. Total frequencies of the bed side occupied showed to be equivalent, however, the left side showed to be chosen significantly more (70 percent)(Χ² = 5.4; 1 d.f.; p<0.05) when the choice was stated to be spontaneous (i.e, not determined by an impositive factor). It is concluded that the obtained data give favourable support to an extensive study on the subject, which inserts into the area of research devoted to the understanding of the functional characteristics of central nervous functioning.